baber/WOPTO huggingface dataset:
Patent GB-877619-A (GB)
Title: Phosphatic fertilizers
Inventor: DEE THOMAS PRIDE
IPC: C05B11/06
Filed: 1956-10-06
Abstract: A process for the production of fertilizer material comprises adding to phosphate rock a mixture of sulphuric and phosphoric acids, followed by treating with nitric acid and the product being neutralised.  Suitable acids are the commercially available concentrated acids, e.g. 50-90% sulphuric, 50-70% phosphoric and 40-60% nitric acid and although the proportions used may vary over a large range, the preferred amounts per mole P2O5 in the rock are 1.4 to 3.5 moles sulphuric acid, 1 to 3 moles phosphoric acid and 1.5 to 10 moles nitric acid.  The neutralizing agent is preferably ammonia, but may be potassium hydroxide or carbonate, and may be in such proportion as to leave substantially the whole of the phosphate water-soluble, (e.g. as monocalcium phosphate) or be sufficient to convert part to the citrate-soluble state (e.g. as dicalcium phosphate).  Other plant food materials, e.g. ammonium sulphate, ammonium nitrate or potassium chloride may be added to the final product which may also be granulated.ALSO:A process for the production of fertilizer material comprises adding to phosphate rock a mixture of sulphuric and phosphoric acids, followed by treating with nitric acid and the product being neutralised.  Suitable acids are the commercially available concentrated acids e.g. 50-90% sulphuric, 50-70% phosphoric and 40-60% nitric acid and although the proportions used may vary over a large range, the preferred amounts per mole P2O5 in the rock are 1,4 to 3,5 moles sulphuric acid, 1 to 3 moles phosphoric acid and 1,5 to 10 moles nitric acid.  The neutralizing agent is preferably ammonia, but may be potassium hydroxide or carbonate, and may be in such proportion as to leave substantially the whole of the phosphate water-soluble, (e.g. as monocalcium phosphate) or be sufficient to convert part to the citrate-soluble (non-water-soluble) state (e.g. as dicalcium phosphate).  Other plant food materials e.g. ammonium sulphate, ammonium nitrate or potassium chloride may be added to the final product which may also be granulated.
Patent GB-267854-A (GB)
Title: Improvements in or relating to railway rails
IPC: E01B5/08
Filed: 1926-12-02
Abstract: 267,854. Rosenbaum, H. R. Dec. 2. 1926. Rails, metallic built-up, comprise outer members 1, 4 provided with projections or flanges forming the head and base of the rail and inner members 2, 3 formed by substantially flat bars. The inner members may be enlarged at the top or bottom, or both top and bottom, or may have projecting ribs or grooves. The joints are all stepped, and the upper surfaces of the two members of a joint are depressed at their ends to reduce shock.
Patent GB-1322843-A (GB)
Title: Generation of silicon tetrafluoride
IPC: C01B33/08
Filed: 1971-06-30
Abstract: 1322843 SiF 4 ; SiO 2  CITIES SERVICE CO 30 June 1971 [1 July 1970] 30568/71 Heading C1A Silicon tetrafluoride is generated by passing a mixture of HF and water through a pervious bed of silica and reacting the HF in both vapour and liquid phases with the silica in the bed at a temperature about the dew point of the reaction mixture, said liquid phase being vaporized at about the same rate that it is introduced into the bed and recovering a vapour mixture comprising SiF 4  and water. The water/HF mixture has a preferred molar ratio in the range 0À5- 8À5 : 1 and the bed may be composed of crystalline silica particles and the temperature of the reaction mixture in the bed is preferably maintained at a temp. below 250‹ F. but high enough to prevent discharge of a substantial amount of liquid from the bed. The HF water mixture may be derived from aqueous HF or aqueous H 2 SiF 6  or their mixtures and may be charged on a single wet vapour stream or as separate streams of liquid and of vapour. The SiF 4  containing product vapour may be hydrolysed in the vapour phase for the production of fumed silica by heating to a temperature in excess of 1100‹ F.
Patent GB-880153-A (GB)
Title: Driven pivotal joint for manipulators
IPC: B25J9/04
Filed: 1959-09-08
Abstract: 880,153. Handling radioactive materials. GENERAL MILLS Inc. Sept. 8, 1959 [Sept. 19, 1958], No. 30682/59. Class 39 (4). [Also in Group XXV] A driven joint 10 of a remote control manipulator 11 enabling an upper arm 18 to be raised or lowered on a main frame 23 about the joint axis comprises a motor 24 mounted on the frame 23 and driving a gear 37 through a pinion 36. Overload slipping clutch plates 38, 39 engage opposite faces of the gear 37 under pressure of a spring device 51, the plate 38 being secured to a drive shaft 40 extending through a bore 41 in a driven shaft 27. A sun gear 43 on the shaft 40 drives gear portions 45b of planetary gears 45 mounted on axis 46 on a rotatable cage 44. The gear portions 45b also engage a fixed ring gear 47 whereas planetary gear portions 45a, which have a slightly smaller diameter than the portions 45b, engage a ring gear 48. This difference in diameter causes the gear 48 to be driven at a very low speed, the rotation of the gear being transmitted to the shaft 27 through a spider 49, a key 50 transmitting movement of the shaft to a member 33 to which the arm 18 is secured. Specification 880,152 is referred to.
Patent GB-1156770-A (GB)
Title: Improved Seals for Conveyors Supported on Gas Cushions.
IPC: B65G15/60
Filed: 1968-06-27
Abstract: 1,156,770. Endless conveyers. HEWITTROBINS (SOUTH AFRICA) (PTY.) Ltd. 27 June, 1968 [1 July, 1967], No. 30700/68. Heading B8A. An endless conveyer belt 3 supported on a cushion of gas in a trough 2, forms a gas seal along each of its edges with the side walls of the trough 2. The belt may have turned-over edge portions 16 as shown resting on respectively flexible edge sections 6 of the trough. Alternatively (Fig. 4, not shown) the belt may be flat. The end of the trough is terminated by a lateral extension 21 of the trough sealing sections 6. In the gap between successive troughs, the belt may rest on rollers 18. Rollers 22 in the trough may support the belt when the gas pressure diminishes.
Patent GB-520496-A (GB)
Title: Improvements in or relating to the lubrication of rapidly rotating shafts, more particularly the shafts of centrifugal artificial silk spinning apparatus
IPC: B04B9/12
Filed: 1938-10-24
Abstract: 520,496. Lubricating. PATENTVERWERTUNGSGES. HERMES. Oct. 24, 1938, No. 30701. Convention date, July 7. [Class 12 (iii)] A rapidly rotating vertical spindle 5 has a bore 6 containing a filter 7 in the portion immersed in oil in an oil vessel 15. Under centrifugal force the oil rises up the bore 6. Surplus oil flowing out of radial bores 10 and the remainder flows through radial passages 8 and thence through a filter pad 12 to the upper bearing 3. Oil leaving the latter passes through a filter pad 9 to the lower bearing 2. During its flow up the shaft 5 the oil at no time flows towards the shaft axis.
Patent GB-1392157-A (GB)
Title: Positive electrode for a primary cell
IPC: H01M4/08
Filed: 1973-06-28
Abstract: 1392157 Primary cell positive electrode VARTA BATTERIE AG 28 June 1973 [3 July 1972] 30730/73 Heading H1B A method of making a positive electrode comprises mixing graphite and MnO 2  and introducing into this mixture a dispersion of an organic polymer in a hydrophilic liquid medium in which the polymer is insoluble. The resultant mixture is dried, if necessary, to remove a quantity of the liquid medium and is then pressed to form the electrode. The organic polymer serves as a binder, the preferred polymer being polyisobutylene and the preferred liquid medium being water. Alternative polymers mentioned are polystyrene polyolefins and partially fluorinated polyolefins. In one example 90 parts by weight of MnO 2  are mixed with 10 parts of graphite and into this mixture is introduced 1.5 parts of polyisobutylene in the form of a 10% by weight dispersion in water.
Patent GB-1475857-A (GB)
Title: Copying or duplicating apparatus
IPC: G03G15/00
Filed: 1975-07-23
Abstract: 1475857 Electro-photographic projection printing G RITZERFELD 23 July 1975 [18 Sept 1974] 30740/75 Heading G2A In electro-photographic projection printing apparatus, the original is displaceable with respect to masks to expose selected parts of the original, and the copy paper, after processing, is cut to an appropriate width by selected actuation of one or more of a number of knives. A rotatable drum 2 with a selenium surface 1 passes a charging station 1, an exposure station, a powder developing station 12, a transfer device 16 and a cleaning station 18. Copy sheets 15 are fed past the transfer device 16 and a firing device 17 to driven disc knives 21, 22 only one pair shown. Other similar pairs of knives are disposed in line abreast. An electromagnet 29 controls each knife 21 so that when the electromagnet is energized knives 21, 22 overlap, as shown, to cut the sheet 15. When the electromagnet is de-energized the knives are separated so that the sheet is not cut. The electromagnets are separately energized, as by keys, in any desired combination. The original and a pair of masks are held in flexible transparent envelopes 32, 33 against a transparent platen 9 and illuminated by lamps 10 with reflectors 11. The masks and original are movable perpendicularly to the plane of the drawing, and the masks may carry copy. Transparent tape 38, on which forms are printed, is carried by spools 36, 37 and lies between envelope 33 and platen 9. The copy image is formed on drum 2 by a rotating mirror 5, a fixed mirror 7 and optical systems 6, 8.
Patent GB-1078765-A (GB)
Title: Scale inhibiting compositions
IPC: C02F5/08
Filed: 1965-07-20
Abstract: Scale inhibitors for use in oil-producing strata and equipment consist essentially of the equivalents of 2.5-47.5 (preferably 34.6) molar percent Ca O, at least 2.5 (preferably 18.9) molar percent MgO, and 36-50 (preferably 46.5) molar percent F2O5. There may also be present an oxide of zinc, lead, boron, strontium, iron, cadmium, aluminium, or boron, or mixtures thereof in a total molar percentage not exceeding the sum of the molar percentages of CaO and MgO.  The inhibition is introduced at the base of the well in amount sufficient to maintain 1-100 parts per million parts of water in the strata.ALSO:Phosphate glasses for use as scale inhibitors in oil-producing strata and equipment consist essentially of the equivalents 2.5-47.5 (preferably 34.6) molar per cent CaO, at least 2.5 (preferably 18.9) molar per cent MgO, and 36-50 (perferably 46.5) molar per cent P2O5. There may also be present an oxide of zinc, lead, boron, strontium, iron, cadmium, aluminium, or barium, or mixtures thereof in a total molar percentage not exceeding the sum of the molar percentages of CaO and MgO.
Patent GB-1437075-A (GB)
Title: Gas detectors
IPC: G01N27/16
Filed: 1972-06-30
Abstract: 1437075 Measuring gas concentration; resistance bridge NATIONAL RESEARCH DEVELOPMENT CORP 25 June 1973 [30 June 1972] 30762/72 Headings G1N and G1U The concentration of a test gas in a gas mixture is determined by the change in temperature of a heated catalyst, and is measured by the electrical power required to maintain the temperature of the catalyst at a constant value. As shown, Fig. 1, a bead 14 of a refractory material containing a catalytic substance and a platinum wire coil is supported in an enclosure 11, which is open to an atmosphere with a contaminant gas whose concentration is to be determined through a first aperture 12, a filter 13 and an adjustable iris diaphragm 24, and is fed through a second aperture 20 with methanol. The methanol vapour reacts with the oxygen of the atmosphere to raise the temperature of the bead 14 by an amount dependant on the test gas concentration. The temperature is measured by the resistance of the platinum wire in the bead 14, when connected in a resistance bridge network ABCD Fig. 3. The bridge unbalance at BD is fed back via transistors 36, 38 to vary the bridge energizing voltage at A.C. to maintain the temperature and resistance of bead 14 and the unbalance voltage at a constant value. The voltage across the bead 14 is then indicative of the concentration of the contaminant gas.
Patent GB-1042817-A (GB)
Title: Method and apparatus for drilling
IPC: E21B7/14
Filed: 1964-08-04
Abstract: 1,042,817. Flame piercing of minerals. CANADIAN INGERSOLL-RAND CO. Ltd. Aug. 4, 1964 [Aug. 12, 1963], No. 30839/64. Heading E1F. A rock drill that is suspended from a hoist cable as it is lowered into a borehole it is forming is so constructed as to allow of heat stressing of the rock ahead of the drill bit of the tool before removal by the rotary and percussive boring action of the bit.
Patent GB-717815-A (GB)
Title: Improvements in journal boxes for axles
Inventor: JR RICHARD J BRITTAIN
IPC: B61F15/18
Filed: 1952-12-05
Abstract: 717,815. Thrust bearings. GENERAL MOTORS CORPORATION. Dec. 5, 1952, No. 30859/52. Class 12(1) A thrust bearing for ar axle box comprises a thrust block 14 having a flat thrust face 34 of cast bronze, and lugs 24 on the block which are rotatably confined in recesses 26 in an end plate 16, the block being resiliently supported against the end plate by a conical ring 42 of synthetic rubber and so on bonded to conical metal rings 44, 46, which rubber ring is pre-loaded when the end cap is bolted into place so that the lugs 24 are adapted normally to seat against an annular flange 18 of the box through shims 20 which may be varied in thickness or number to vary the space between the axle and thrust block. The block has an annular flat face 40 which abuts against the bottom of the recess 28 if the axle engages the block with sufficient force to overcome the resilient pad 42. A ring 12 collects oil from the roller bearing and delivers it to a cavity 36 and an annular groove 35 eccentric to the block, which block is also provided with a shallow drain groove 52. A screw 56 holds the end cap, pad 42, and the block together for handling as a unit during assembly. A groove 37 is provided in the block to indicate wear of the thrust face and the conical recess in the end cap is provided to assist cooling. In a modification the end cap is extended to provide support for an axle driven generator.
Patent GB-225388-A (GB)
Title: Improved gas burner
IPC: F23D14/64
Filed: 1923-12-08
Abstract: 225,388. Radiation, Ltd., Brayshaw, S. N., and Brayshaw, E. R. Dec. 8, 1923. Addition to 201,382 and 217,771. Atmospheric gas burners. -In a gas burner, as described in the parent Specification, the member E is provided with a Venturimember E<1> adapted to be screwed towards or away from the nipple g for regulating the air supply. The Venturi-member E<1> may be held in adjusted position by a spring.
Patent GB-385068-A (GB)
Title: Improvements relating to insulating supports for electric terminals
IPC: H01R9/20
Filed: 1931-11-07
Abstract: 385,068. Binding-posts. BRITISH INSULATED CABLES, Ltd., Prescot, Lancashire, and HIGHAM, H., Sandy Mount, Helsby, Cheshire. Nov. 7, 1931, No. 30893. [Class 38 (i). A n insulating support for an electric terminal comprises a piece of insulating material 2 held between the turned over upper portion 3 and base 4 of a member 1, the lower portion of which is of tubular shape 5 adapted to pass through a hole in the sheet of material 6 and be bent over to secure the support, the sheet of material being gripped between the base 4 and the portion 5. The lower part of the terminal to be fixed in the insulating material 2 has the form of a split tube 7 and is passed through a hole, and the end turned over to hold the tag in position against a projection 10. In a modification (not shown), the end portion of the terminal is bent over into contact with a metal washer to prevent damage to the insulating material.
Patent GB-387057-A (GB)
Title: Means for enabling pipe mains to be inspected and cleaned
IPC: F16L45/00
Filed: 1931-11-07
Abstract: 387,057. Inspection pits. JOHNSON, P. G., Brackley, Hitchin Road, Letchworth, Hertfordshire. Nov. 7, 1931, No. 30914. [Class 33.] To facilitate inspection of a pipe line, three short sections are disposed in an inspection pit and the outer ones are cemented in the walls thereof, the inner one being removable. If the pit is formed of cast iron, the outer sections B<4> may be cast integrally with the pit.
Patent GB-679655-A (GB)
Title: Stabilized vinyl chloride resins
IPC: C08K5/57
Filed: 1949-12-01
Abstract: Polymers and copolymers of vinyl chloride are stabilized by addition of a hydrocarbon tin alcoholate or phenolate having the formula <FORM:0679655/IV (a)/1> where R is an alkyl or an aryl radical, and R1 is the residue of a monohydroxyl compound containing at least one carbon to carbon double bond and having at least three carbon atoms, or is the residue of an unsaturated aromatic, heterocyclic or aliphatic monohydric alcohol having a pair of conjugated double bonds, preferred compounds being the dibutyl tin alcoholates of furfuryl, benzyl and allyl alcohols.  Copolymers referred to contain 60-100 per cent by weight of vinyl chloride which may be copolymerized with vinyl acetate or propionate, ethyl acrylate, dibutyl maleate, diethyl fumarate, vinylidene chloride, vinyl fluoride or ethylene.  The tin compound is preferably present in an amount of from 0.5 to 5 per cent by weight of polymer. Compositions described contain di-(2-ethyl hexyl) phthalate and stearic acid in addition to the polymer and the tin compound. Specification 664,133, [Group IV (b)], is referred to.
Patent GB-839639-A (GB)
Title: Improvements in or relating to variable electrical components
Inventor: BROWN JOHN KENNETH
IPC: H01C10/36
Filed: 1956-10-11
Abstract: 839,639. Variable electrical components. A.B. METAL PRODUCTS Ltd. Dec. 30, 1957 [Oct. 11, 1956], No. 30961/56. Class 37. [Also in Group XL (c)] A variable component such as a resistor or potentiometer is operated by rotation of a spindle which may be engaged with or disengaged from a rotatable unit carrying a contact arm, the engagement or disengagement being effected by axial movement of the spindle, which also operates a switch mounted in the front of the potentiometer. In the embodiment shown the actuator 11 may be moved axially against the influence of the spring 18, such that the two dogs 16 engage with any pair of the four pairs of diametrically-opposed holes 17 in the female portion of the clutch 6. As the actuator 11 moves inwards, a flange 13 pushes a spring contact 9 away from the fixed contact 14 to engage with the contact 15. By rotating the actuator whilst it is pressed in the rotor assembly 4, 5 is caused to rotate moving the wiping contact 3 over the resistance element 2. Ganged potentiometers may be incorporated with the switch.
Patent GB-520108-A (GB)
Title: Improvements in and relating to lithographic printing plates
IPC: B41N3/08
Filed: 1938-10-27
Abstract: 520,108. Photo-mechanical printing-surfaces; electrolysis. MORLAND & IMPEY, Ltd., and RENDALL, A. G. Oct. 27, 1938, No. 31072. [Class 98 (ii)] [Also in Group XXXVI] In etching an aluminium plate for lithographic printing having an anodized surface coated with light sensitive emulsion, the etching action is supplemented by an electrolytic action. For this purpose, a pad carried on an electrically-conductive holder may be used, the pad comprising a body a, e.g., of wood, with an aluminium surface layer b, a layer of felt, leather or flannel d, a separating layer e of parchment or parchment paper, and a covering layer c of velvet. The pad is applied to the plate, and an electric current is passed through. The layer c is soaked in the etching agent, the layer d with an electrolyte such as glycerine or aluminium chloride, and the layer e with water or an electrolyte such as calcium chloride solution to prevent interming- ling of the solutions in layers c and d.
Patent GB-299207-A (GB)
Title: Improvements in seats
IPC: B60N2/52
Filed: 1927-11-19
Abstract: 299,207. ChÚron, (nÚe Faivre), L. R. Nov. 19, 1927. Seat adjustments; spring mountings and supports; rests, head.-In a seat of the suspended type with adjustable pivoting elements the whole seat is pivoted transversely at a point near the normal position of the sitter's knee and means are provided for quickly adjusting and fastening vertically and longitudinally the front and rear supports. Means are also provided for damping the movement of supports and for braking such damping. As shown the chair comprises a shaped framework 2 with transverse straps or springs 3, Front supports 6 slide in casings 7 in which they are positioned by pins 36 engaging holes therein. The casings 7 are pivoted at 8 and the supports 6 at 4. The two supports are connected together bv an axle or may be independently mounted. - The pivots of the casings 7 are arranged on longitudinally slidable frames 9. The back of the seat comprising frames 23 and springs 25, is pivoted at 24 to rigid members 14 supported by telescopically slidable supports 18, Figs. 1 and 5, adjustably fixed by pins 36 to casings 20. The latter slide telescopically against the action of springs 44 as shown in Fig. 5, the movement being damped by the friction of a cork or like element 52 adjusted bv a screw 54. By means of a toothed cam 31 the back may be adjusted, a projection 34 thereon being varied in position. A neck rest 26, Fig. 2, is adjustably supported by a rod 27.
Patent GB-428223-A (GB)
Title: Improvements in or relating to the production of esters of unsaturated monocarboxylic aliphatic acids
IPC: C07C69/54
Filed: 1933-11-09
Abstract: Esters of unsaturated monocarboxylic aliphatic acids are manufactured by subjecting a halogenated saturated aliphatic acid containing at least three carbon atoms, or, preferably, an ester thereof, in the vapour phase to an elevated temperature in the presence of silica gel as catalyst, the free acid when used being subsequently esterified. When treating the free acid, the reaction is preferably conducted in the presence of water vapour. In examples: (1) isobutyric acid is chlorinated to produce a mixture of a -chlorisobutyric acid, its chloride and anhydride, and b -chlorisobutyric acid, which mixture is esterified with methanol; the product is vaporized and passed at atmospheric pressure over silica gel at 300 DEG  C., yielding methyl methacrylate; (2) propionic acid is chlorinated to produce a mixture of a - and b -chloro- and a -b -dichloropropionic acids, from which the b -acid is isolated and is vaporized in admixture with water and passed over silica gel at 300 DEG  C. and atmospheric pressure to yield acrylic acid which is esterified with methanol.
Patent GB-1243879-A (GB)
Title: Apparatus for playing fishing games
Inventor: TEMPLEMAN ROBERT GORDON
IPC: A63F9/30
Filed: 1969-06-20
Abstract: 1,243,879. Indoor games. THOMAS SALTER Ltd. 23 April, 1970 [20 June, 1969], No. 31224/69. Heading A6H. Apparatus for playing a fishing game comprises a member secured to a free end of a line and an object both having a piece of fabric thereon, the fabric being such that when the two pieces are placed in contact with each other they interlock so that the object may be lifted together with the member.